Can someone provide rough prices for a B18C (C2, C7 Aus or C7 Jap) conversion or a K20A (Aus) conversion?

I'm deciding if i'll be a tight ass and sell the car, or drop a new engine in her.

Last time I played around with it it was about $8k for B18C7 Jap or almost $15k for K20A. This was over 2 years, so I'm expecting/hoping the prices have dropped a lot.